电力电缆暂态导体温度计算及过负荷能力预测  

Calculation of transient conductor temperature of power cable and prediction of overload capacity

作　　者：刘同同[1] 陈江源[1] 张航[1] 吴文克 敖明 

机构地区：[1]东北电力大学电气工程学院,吉林吉林132012 [2]吉林省电力有限公司电力科学研究院,长春130021

出　　处：《黑龙江电力》2015年第4期299-303,共5页Heilongjiang Electric Power

摘　　要：为解决无法直接测量导体温度的问题,在电缆内置光纤温度监测的基础上,建立了单芯电缆暂态热路模型,同时编制了由光纤温度推算导体温度的计算程序,并根据实时负荷和光纤的温度计算导体温度。在实验室对单芯电力电缆进行了恒定负荷和周期负荷的暂态温升试验,结果表明,基于实时负荷电流和电缆光纤温度推算电缆导体温度具有较高的精度,同时,基于光纤温度和实时负荷对电缆进行过负荷能力预测,可满足工程需要。Due to the limitation of the production process, it is difficult to measure the conductor temperature directly. Consequently, based on the temperature of the optical fiber, the transient thermal circuit model is established. The conductor temperature can be calculated by the software programmed on the basis of the fiber temperature. To verify the theoretical analysis, the research on the power cable of constant load and cycle load transient temperature rise is made. The results show that it is accurate to calculate the conductor temperature and to forecast overload capacity based on real -time load current and optical fiber temperature.

关 键 词：单芯电缆 暂态热路模型 光纤温度监测 暂态温度 试验 

分 类 号：TM247[一般工业技术—材料科学与工程]